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(regno_reg_class): Change entry 23 from NO_REGS to GENERAL_REGS. 

(initial_elimination_offset): New variable live_regs_mask.  Add
code to handle RETURN_ADDRESS_POINTER_REGNUM.

From-SVN: r12627
This commit is contained in:
Jim Wilson 1996-08-12 14:43:22 -07:00
parent f434403dd7
commit 2afeea0fa3
1 changed files with 16 additions and 3 deletions
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19
gcc/config/sh/sh.c
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@ -84,7 +84,7 @@ int regno_reg_class[FIRST_PSEUDO_REGISTER] =
GENERAL_REGS, GENERAL_REGS, GENERAL_REGS, GENERAL_REGS,
GENERAL_REGS, GENERAL_REGS, GENERAL_REGS, GENERAL_REGS,
GENERAL_REGS, PR_REGS, T_REGS, NO_REGS,
MAC_REGS, MAC_REGS, FPUL_REGS, NO_REGS,
MAC_REGS, MAC_REGS, FPUL_REGS, GENERAL_REGS,
FP0_REGS,FP_REGS, FP_REGS, FP_REGS,
FP_REGS, FP_REGS, FP_REGS, FP_REGS,
FP_REGS, FP_REGS, FP_REGS, FP_REGS,
@ -2074,8 +2074,8 @@ initial_elimination_offset (from, to)
int total_saved_regs_space;
int total_auto_space = get_frame_size ();
int live_regs_mask2;
calc_live_regs (&regs_saved, &live_regs_mask2);
int live_regs_mask, live_regs_mask2;
live_regs_mask = calc_live_regs (&regs_saved, &live_regs_mask2);
total_saved_regs_space = (regs_saved) * 4;
@ -2089,6 +2089,19 @@ initial_elimination_offset (from, to)
if (from == FRAME_POINTER_REGNUM && to == STACK_POINTER_REGNUM)
return 0;
if (from == RETURN_ADDRESS_POINTER_REGNUM
&& (to == FRAME_POINTER_REGNUM || to == STACK_POINTER_REGNUM))
{
int i, n = 0;
for (i = PR_REG+1; i < 32; i++)
if (live_regs_mask & (1 << i))
n += 4;
for (i = 32; i < FIRST_PSEUDO_REGISTER; i++)
if (live_regs_mask2 & (1 << (i - 32)))
n += 4;
return n + total_auto_space;
}
abort ();
}